chore(deps): bump schemars from 0.8.22 to 1.0.3 in /backend

---
updated-dependencies:
- dependency-name: schemars
  dependency-version: 1.0.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

backend/Cargo.lock

@@ -12,7 +12,7 @@ serde_json = { workspace = true }
 [build-dependencies]
 reqwest = { workspace = true }
 rustfmt-wrapper = { version = "0.2.1" }
-schemars = { version = "0.8.22" }
+schemars = { version = "1.0.3" }
 serde_json = { workspace = true }
 syn = { version = "2.0.100" }
 typify = { version = "0.3.0" }